Lithium ion has been the main battery material for a long time, and the smartphone industry is seeking to shift from lithium ion batteries to more advanced solutions. However, due to some challenges, smartphone manufacturers avoid using graphene in their smartphone batteries.
But now it seems that Huawei has finally stepped into this matter, because Huawei has recently certified a new design patent, which was recently issued by the State Intellectual Property Office of China.
Before we introduce the patent in detail, you may need to know some information about graphene:
A traditional lithium-ion battery in a standard smartphone takes about 90 minutes on average, and the time will be shortened with the speed of the charger. On the other hand, a battery with a Graphine battery is much faster, and it takes about 20 minutes to fully charge a 3000mAh battery with a 60W charging brick.
In terms of lifespan, most batteries can manage about 300 and 500 charge cycles, but a graphene battery of the same capacity can last about 1500 cycles, and the battery generates much less heat, which helps make smartphones more efficient. Cooler and safer. (Via DigitalTrends)
The patent says: “Conductive adhesives for lithium ion batteries and their preparation methods, lithium ion battery electrodes and preparation methods, and lithium ion batteries.”
According to the description of the patent, this technology uses polyvinyl alcohol, polyethylene glycol, polystyrene, starch, sodium alginate, etc. as a binder, and graphene as a conductive material. The amount of graphene is 0.1%-10% of the total mass, and the thickness of the graphene particles is 5nm-50nm, and the D50 particle size is 50nm-5000nm.
The patent shows two use cases for adhesives:
- First class accounts for 20%-50%
- The second adhesive uses materials such as polyacrylic acid and polyimide.
- The first and second adhesives are bonded by chemical bonds.
In the image below, you can see:
- Silicon particles